private function assignCommonHeaders($fileInfo, Response $response)
{
$response->setHeader("Accept-Ranges", "bytes");
$response->setHeader("Cache-Control", "public");
$response->setHeader("Etag", $fileInfo->etag);
$response->setHeader("Last-Modified", \gmdate('D, d M Y H:i:s', $fileInfo->mtime) . " GMT");
$canCache = $this->expiresPeriod > 0;
if ($canCache && $this->useAggressiveCacheHeaders) {
$postCheck = (int) ($this->expiresPeriod * $this->aggressiveCacheMultiplier);
$preCheck = $this->expiresPeriod - $postCheck;
$expiry = $this->expiresPeriod;
$value = "post-check={$postCheck}, pre-check={$preCheck}, max-age={$expiry}";
$response->setHeader("Cache-Control", $value);
} elseif ($canCache) {
$expiry = $this->now + $this->expiresPeriod;
$response->setHeader("Expires", \gmdate('D, d M Y H:i:s', $expiry) . " GMT");
} else {
$response->setHeader("Expires", "0");
}
}
private function doRangeResponse($range, $fileInfo, Response $response)
{
$this->assignCommonHeaders($fileInfo);
$range->contentType = $mime = $this->selectMimeTypeFromPath($fileInfo->path);
if (isset($range->ranges[1])) {
$response->setHeader("Content-Type", "multipart/byteranges; boundary={$range->boundary}");
} else {
list($startPos, $endPos) = $range->ranges[0];
$response->setHeader("Content-Length", (string) ($endPos - $startPos));
$response->setHeader("Content-Range", "bytes {$startPos}-{$endPos}/{$fileInfo->size}");
$response->setHeader("Content-Type", $mime);
}
$response->setStatus(HTTP_STATUS["PARTIAL_CONTENT"]);
return $this->finalizeResponse($response, $fileInfo, $range);
}
public function getAllRooms(AerysRequest $request, AerysResponse $response)
{
$result = [];
/** @var ChatRoom $room */
foreach ($this->chatRooms as $room) {
$result[] = ['host' => $room->getIdentifier()->getHost(), 'room_id' => $room->getIdentifier()->getId()];
}
$response->setHeader('Content-Type', 'application/json');
$response->end(json_encode($result));
}
public function doLogOut(Request $request, Response $response)
{
$session = new Session($request);
(yield $session->open());
(yield $session->destroy());
$response->setStatus(302);
$response->setHeader("location", "/");
$response->send("");
}
private function tryErrorResponse(\Throwable $error, InternalRequest $ireq, Response $response, array $filters)
{
try {
$status = HTTP_STATUS["INTERNAL_SERVER_ERROR"];
$msg = $this->options->debug ? "<pre>" . htmlspecialchars($error) . "</pre>" : "<p>Something went wrong ...</p>";
$body = makeGenericBody($status, ["sub_heading" => "Requested: {$ireq->uri}", "msg" => $msg]);
$response->setStatus(HTTP_STATUS["INTERNAL_SERVER_ERROR"]);
$response->setHeader("Connection", "close");
$response->end($body);
} catch (ClientException $error) {
return;
} catch (\Throwable $error) {
if ($ireq->filterErrorFlag) {
$this->tryFilterErrorResponse($error, $ireq, $filters);
} else {
$this->logger->error($error);
$this->close($ireq->client);
}
}
}
/**
* Handles all hooks.
*
* @param Request $request HTTP request
* @param Response $response HTTP response
* @param array $args URL args
*/
public function handle(Request $request, Response $response, array $args)
{
$response->setHeader("content-type", "text/plain");
$token = $request->getQueryVars()["token"] ?? "";
if (!$token || !is_string($token)) {
$response->setStatus(401);
$response->send("Failure: No token was provided.");
return;
}
// use @ so we don't have to check for invalid strings manually
$token = (string) @hex2bin($token);
$hook = (yield $this->hookRepository->get($args["id"]));
if (!$hook) {
$response->setStatus(404);
$response->send("Failure: Hook does not exist.");
return;
}
if (!hash_equals($hook->token, $token)) {
$response->setStatus(403);
$response->send("Failure: Provided token doesn't match.");
return;
}
$name = $args["service"];
if (!isset($this->services[$name])) {
$response->setStatus(404);
$response->send("Failure: Unknown service.");
return;
}
$contentType = strtok($request->getHeader("content-type"), ";");
$body = (yield $request->getBody());
switch ($contentType) {
case "application/json":
$payload = json_decode($body);
break;
case "application/x-www-form-urlencoded":
parse_str($body, $payload);
$payload = json_decode(json_encode($payload));
break;
default:
$response->setStatus(415);
$response->send("Failure: Content-type not supported.");
return;
}
$service = $this->services[$name];
$headers = $request->getAllHeaders();
$event = $service->getEventName($headers, $payload);
if (!isset($this->schemas[$name][$event])) {
$response->setStatus(400);
$response->send("Failure: Event not supported.");
return;
}
$schema = $this->schemas[$name][$event];
$this->validator->reset();
$this->validator->check($payload, $schema);
if (!$this->validator->isValid()) {
$errors = $this->validator->getErrors();
$errors = array_reduce($errors, function (string $carry, array $item) : string {
if ($item["property"]) {
return $carry . sprintf("\n%s: %s", $item["property"], $item["message"]);
} else {
return $carry . "\n" . $item["message"];
}
}, "");
$response->setStatus(400);
$response->send("Failure: Payload validation failed." . $errors);
return;
}
$message = $service->handle($headers, $payload);
try {
if ($message) {
$req = (new HttpRequest())->setMethod("PUT")->setUri($this->config["api"] . "/messages")->setHeader("authorization", "Basic " . base64_encode("{$this->config['user_id']}:{$this->config['token']}"))->setBody(json_encode(["room_id" => $hook->room_id, "text" => $message->getText(), "data" => $message->getData()]));
$resp = (yield $this->http->request($req));
if (intval($resp->getStatus() / 100) !== 2) {
$message = "API request failed: " . $resp->getStatus();
if ($resp->getBody()) {
$message .= "\n" . $resp->getBody();
}
throw new Exception($message);
}
}
$response->send("Success: " . ($message ? "Message sent." : "Message skipped."));
} catch (Exception $e) {
$response->setStatus(500);
$response->send("Failure: Couldn't persist message.");
}
}
public function rateLimit(Request $request, Response $response)
{
$user = $request->getLocalVar("chat.api.user");
if (!$user) {
// if this happens, something's really wrong, e.g. wrong order of callables
$response->setStatus(500);
$response->send("");
return;
}
$count = (yield resolve($this->rateLimit->increment("limit:u:{$user->id}")));
$ttl = (yield resolve($this->rateLimit->ttl("limit:u:{$user->id}")));
$remaining = self::RATE_LIMIT - $count;
$response->setHeader("x-rate-limit-limit", self::RATE_LIMIT);
$response->setHeader("x-rate-limit-remaining", max(0, $remaining));
$response->setHeader("x-rate-limit-reset", $ttl);
if ($remaining < 0) {
$response->setHeader("retry-after", $ttl);
$error = new Error("too_many_requests", "your application exceeded its rate limit", 429);
$this->writeResponse($request, $response, $error);
}
// a callable further down the chain will send the body
}
